Harnessing the environment of spin-qubits in quantum dots

CFM Seminars

Speaker: Geza Giedke (DIPC - Donostia International Physics Center)
When: 2014/10/22
14:00
Place: Auditorium of the Centro de Fisica de Materiales, Paseo Manuel de Lardizabal 5, Donostia-San Sebastián
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Harnessing the environment of spin-qubits in quantum dots

Electron spins in semiconductor quantum dots are one of the most advanced candidates to implement qubits and to eventually realize quantum information processing in solid-state systems. For this purpose, they must be proctected against interaction with uncontrolled "environments" such as phonons, electron reservoirs, or nuclear spins. With proper control, however, these degrees of freedom can be turned into a useful resource to enable or enhance quantum computation using the spin qubits. We consider two such environments -- the nuclear spin bath and the surface-acoustic phonons -- and discuss their interaction with the QD spin, the means to experimentally control them, and potential applications in quantum information processing.